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 Replies: 17 / Views: 1,021 |
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Pillar of the Community
 Canada
1134 Posts |
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Pillar of the Community
Canada
665 Posts |
I agree that they are polishing lines . If it was lathe marks it would be 90 degrees to those. Nice find none the less. I admire your inspiration.
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Pillar of the Community
United States
5602 Posts |
Lathe lines are concentric and on the fields, not the details. And I'm not sure those are even polishing lines but that's the best reason so far...........
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Pillar of the Community
 Canada
5402 Posts |
Yes, lathe lines wouldn't be in the die cavities, so they wouldn't be in/on the design.
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Pillar of the Community
Canada
665 Posts |
"So they wouldn't be in/on the design"
Not so. The 1965 DDR5 chadcoins showed has the lathe lines on and over top of the design going over the log or rocks as I can confirm as I have the same coin. The second coin is a 1965 small 5, not the DDR5 and also has the lines on and over the log/ rock.
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Pillar of the Community
United States
6054 Posts |
The Queens having a bad hair day.....  But really, what are they? |
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Pillar of the Community
United States
5602 Posts |
Quote:
Not so. The 1965 DDR5 chadcoins showed has the lathe lines on and over top of the design Interesting as the lathe tool only (?) contacts the surface (fields) - do you have an example picture?
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Pillar of the Community
Canada
665 Posts |
Chadcoins takes better pictures that I do.
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Pillar of the Community
United States
5602 Posts |
Quote:
Chadcoins takes better pictures that I do. Well that figures. The lathe tool is used to shape the Die stock before the hubbing process. Meaning there would not be any lathe lines in the incuse details areas as they would be pressed out during the pressure of the hubbing.
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Pillar of the Community
Canada
1134 Posts |
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Bedrock of the Community
 United States
18355 Posts |
Inordinately fascinated by bits of metal with strange markings and figures
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Bedrock of the Community
United States
58626 Posts |
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Moderator
Canada
10436 Posts |
If it's copper plated zinc, then what you are seeing could be artifacts of the plating bath. Plating lines are often seen in parallel.
"Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert OppenheimerContent of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: https://creativecommons.org/license...0/deed.en_USMy ebay store
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Pillar of the Community
Canada
1134 Posts |
When I found this coin I was kinda stumped on it too and what a great debate here on finding the solution. I did read that when a mint employee goes to a specific area of a coin to sand or repair the die with grit tools that it could leave scratch mark incisions in the die.The motions are usually back and forth. That matches that area of the hair. This could be a mint employee induced. (maybe)
Edited by chadcoins
01/28/2025 12:45 am
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Moderator
United States
162835 Posts |
Quote:
If it's copper plated zinc, then what you are seeing could be artifacts of the plating bath. Plating lines are often seen in parallel. 
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Replies: 17 / Views: 1,021 |
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First Page
Posted 01/27/2025 6:02 pm
